GB850676A - Engine liquid cooling system - Google Patents

Abstract

850,676. Cooling systems for internal combustion engines. CASSELL, W. C. March 26, 1959 [June 19, 1958], No. 10539/59. Class 64(3) [Also in Group XXIX] Compressible means formed of elastic resilient material are disposed in the cooling water spaces of a liquid cooled internal combustion engine. The compressible means may comprise solid or hollow cylindrical members 40 of rubber, retained in their operative positions in the engine cooling water spaces by means of wires 45 and such members may be provided in the cylinder block 11 and on the head 12. The invention is said to be intended for use under conditions of very low temperature wherein the cooling water freezes solid when the engine is out of use, and in the system shown for use under such conditions similar compressible means are also provided in the bottom header of the engine cooling radiator 20. Further safety precautions against freezing pressures comprise the formation of concave wall portions 50 in the bottom header of the radiator and the provision of a pressure relief valve 65 (see Group XXIX) which it is said, is connected to any isolated cavities in the engine in which pressure may not be adequately relieved. To prevent damage to the pump 30 on starting up the engine with the coolant frozen, a slipping drive connection is provided between the engine shaft 25 and the pump driving shaft 31, and to provide a limited path for coolant as soon as possible under such starting conditions an electric heating wire connected to the battery, extends through one of the radiator tubes and through the hoses 21, 22 connecting the radiator to the engine. The wire is energized as required by the operator of the engine. A detachable windshield member 60 may be used to cover that part of the radiator in which the heating element is fitted and such member is said also to assist in the thawing out of the overflow pipe 24 which is located near the heating element.